I was at my grandmother's home for a dinner. With my siblings, after the dinner party, watching a prime time show. One of my uncles, who is a mathematics professor, didn't like and asked us to sit down beside him for some puzzles. We solved many formations of Fibonacci and Premium Educational series except one which is posted below:
212 224 246 278 310 322
He asked us to tell the previous two and next two numbers of this series. Can someone help me to answer my uncle, who left this as a challenge for us?
It is based on the formations of the unique numbers.
One of my siblings reminded me that the first number, but not the answer, of this formation series is -7, as told him by Uncle personally.
My grandmother's home is at the 5th floor in a 7 story building.